kicad/gerbview/class_am_param.h

175 lines
5.7 KiB
C++

/*****************/
/* am_param.h */
/*****************/
/*
* This program source code file is part of KICAD, a free EDA CAD application.
*
* Copyright (C) 1992-2010 Jean-Pierre Charras <jean-pierre.charras@gipsa-lab.inpg.fr>
* Copyright (C) 2010 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
* Copyright (C) 1992-2010 Kicad Developers, see change_log.txt for contributors.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifndef _AM_PARAM_H_
#define _AM_PARAM_H_
/*
* An aperture macro defines a complex shape and is a list of aperture primitives.
* Each aperture primitive defines a simple shape (circle, rect, regular polygon...)
* Inside a given aperture primitive, a fixed list of parameters defines info
* about the shape: size, thickness, number of vertex ...
*
* Each parameter can be an immediate value or a defered value.
* When value is defered, it is defined when the aperture macro is instancied by
* an ADD macro command
*
* Actual values of a parameter can also be the result of an arithmetic operation.
*
* Here is some examples:
* An immediate value:
* 3.5
* A deferend value:
* $2 means: replace me by the second value given in the ADD command
* Actual value as arithmetic calculation:
* $2/2+1
*
* Note also a defered parameter can be defined in aperture macro,
* but outside aperture primitives. Example
* %AMRECTHERM*
* $4=$3/2* parameter $4 is half value of parameter $3
* 21,1,$1-$3,$2-$3,0-$1/2-$4,0-$2/2-$4,0*
* For the aperture primitive, parameters $1 to $3 will be defined in ADD command,
* and $4 is defined inside the macro
*
* Some examples of aperture macro definition
* A simple definition, no parameters:
* %AMMOIRE10*
* 6,0,0,0.350000,0.005,0.050,3,0.005,0.400000,0.0*%
* Example of instanciation:
* %ADD19THERM19*%
*
* A simple definition, one parameter:
* %AMCIRCLE*
* 1,1,$1,0,0*
* Example of instanciation:
* %ADD11CIRCLE,.5*%
*
* A definition, with parameters and arithmetic operations:
* %AMVECTOR*
* 2,1,$1,0,0,$2+1,$3,-135*%
* Example of instanciation:
* %ADD12VECTOR,0.05X0X0*%
*
* A more complicated aperture macro definition, with parameters and arihmetic operations:
* %AMRNDREC*
* 0 this is a comment*
* 21,1,$1+$1,$2+$2-$3-$3,0,0,0*
* 21,1,$1+$1-$3-$3,$2+$2,0,0,0*
* 1,1,$3+$3,$1-$3,$2-$3*
* 1,1,$3+$3,$3-$1,$2-$3*
* 1,1,$3+$3,$1-$3,$3-$2*
* 1,1,$3+$3,$3-$1,$3-$2*%
* Example of instanciation:
*
* A more complicated sample of aperture macro definition:
* G04 Rectangular Thermal Macro, params: W/2, H/2, T/2 *
* %AMRECTHERM*
* $4=$3/2*
* 21,1,$1-$3,$2-$3,0-$1/2-$4,0-$2/2-$4,0*
* 21,1,$1-$3,$2-$3,0-$1/2-$4,$2/2+$4,0*
* 21,1,$1-$3,$2-$3,$1/2+$4,0-$2/2-$4,0*
* 21,1,$1-$3,$2-$3,$1/2+$4,$2/2+$4,0*%
* Example of instanciation:
* %ADD28RECTHERM,0.035591X0.041496X0.005000*%
*/
#include <vector>
#include "dcode.h"
/**
* Class AM_PARAM
* holds a parameter for an "aperture macro" as defined within
* standard RS274X. The \a value field can be a constant, i.e. "immediate"
* parameter or it may not be used if this param is going to defer to the
* referencing aperture macro. In that case, the \a index field is an index
* into the aperture macro's parameters.
*/
class AM_PARAM
{
public: AM_PARAM() :
index( -1 ),
value( 0.0 )
{}
double GetValue( const D_CODE* aDcode ) const;
void SetValue( double aValue )
{
value = aValue;
index = -1;
}
/**
* Function IsImmediate
* tests if this AM_PARAM holds an immediate parameter or is a pointer
* into a parameter held by an owning D_CODE.
*/
bool IsImmediate() const { return index == -1; }
unsigned GetIndex() const
{
return (unsigned) index;
}
void SetIndex( int aIndex )
{
index = aIndex;
}
/**
* Function ReadParam
* Read one aperture macro parameter
* a parameter can be:
* a number
* a reference to an aperture definition parameter value: $1 ot $3 ...
* a parameter definition can be complex and have operators between numbers and/or other parameter
* like $1+3 or $2x2..
* Parameters are separated by a comma ( of finish by *)
* @param aText = pointer to the parameter to read. Will be modified to point to the next field
* @return true if a param is read, or false
*/
bool ReadParam( char*& aText );
private:
int index; ///< if -1, then \a value field is an immediate value,
// else this is an index into parent's
// D_CODE.m_am_params.
double value; ///< if IsImmediate()==true then use the value, else
// not used.
};
typedef std::vector<AM_PARAM> AM_PARAMS;
#endif // _AM_PARAM_H_